Cosby, Cobbs and Cobbs

So my housemates and i were sitting watching tv the other night.
and an argument occurred during which we realised to our shock that bill cosby and bill cobbs are apparently two different actors. I’m not actually convinced though, although there is the possibility of Cobbs being the crackhead twin brother of Cosby..

Cobbs is described on the comments section of IMDb as “the poor man’s morgan freeman”